Seat



Nov. 18, 1930. .1. w. CROSS Erin 1,732,231

star Film-Dec. 1a, 1929 Shoots-Shot! 1 A TTORNEYS.

tion-of seat in which the seat back vframe Patented Nov. 18, 1930 JAMES WILLIAM'GBOSS," on FINSBU-RY ravnmnncr, ennon, AND'ERTC JOHNSON, or 'ror'rnn rainmonnon, ENGLAND SEAT: r

Applicationfiled December 13, leaaseriai no. 41S,839,'and in -Great Britainlleceinber 10, 1928.

The present inventionrrelates to seats, morepartlcularly of the public service type, such as are used 1n conveyances, such as electrictrains and tramcars, and omnibuses,

These. seats SOIIIGtlIllBShELVQ fixed backs and of a swinging lever and associated .1nIecha nism at the outer end of the seat, the-inner end being adjacent to the side of the ve-- hicle, there is a risk of the clothing of passengers becoming caught in the mechanism of the seat orv drawn in behind the'usual' end protection plate; and an importantobject of this invention is to provide a construction of reversible seat which is free from this disadvantage.

Another object is'to provide aseat construction which allows. the required seating spaceto be provided witha smaller over-all dimension: of seat, giving greater gangway space where necessary, or alternatively a wide seating space. V V

The invention also concerns any construcis carried by an arm or arms projecting upwardlv from the seat understructnre whether said arms are movable or not. In this connection an important object of theinventiota is to provide a seat back which is removablv mounted onits supporting arms.

vmay befound suitable into the seat back or back cushion. For example,- they may extend for only a short distance therein from the lower edge of the back cushion or frame,

or they may extend for the full width or height of the cushion or'sea-tback. j Y

n In orderthat the invention may be clear? 3+3 of Figure 1;

; UNITED TATE-S PATENT oFFIcELt nnnnmon lyeunderstood and readily'carriedinto practice, we have appended hereto two sheets of drawings, illustrating thesanle, whereconstructed inaccordance' with this inven-r tlOll. a r

"Figure 2 is a section on the line 22 of Figure 1. p e 1 V 1 Figure 3vis anenlarged section,on the line "Figure 4 is anenlarged section on the'li-ne 4.& of Figure l, f y v Figuret is a section on the line 55 of FigureB.

Figure 6 is a section on the line 6-6: of

Figure 4.

Figure- 7 is an elevation of modified form of seat backfram'e: e ,The drawings-illustrate, in Figures 1 and 2, a double seatinwhich the seat back 1, 2

1s mountedjon a pair of pivoted swing-over levers,gone of which, 3,7is located adjacent to the side of the'vehicle, and the-other of whichg, is located'mid-Way along the length of theiseat in the dividing line between the two seat portions 5 and 6. Thus the seat overhung extension of the seat back 1 of the inner seat 5. "The lever 3-is cranked, as shownrso' that the end of the seat back his vertically above the end of the seat :5, and

the two levers 3 and A are constrained to moveas one by the bar 7 of the seat back =f12t1116,WhlCh overhangsthe seat cushion 6. The seat under-structure of the seatis immaterial to the invention, but preferably back 2' of the-outerseat 6 constitutes an Y it comprises-a standard t9,rwhich supports longitudinal angle ironcbearers 10 adapted to besecure dattheir opposite ends to the wall 11' of the vehicle and-connected 'to gether cross braces-12.

The seat cushions 5 and'6, or a single slotted cushion -in lieu thereof,i are or is mountedupon a common supporting frame or cradle built up of longitudinal angle iron members 13 and transverse angle .iron braces '14.

Eachof the seat back levers 3, 4 is enlarged at its lower end and pivoted to a pair of substantially parallel links 15, which of the seat, while-their ends are engaged rods 19 are mounted in depending bracket plates fastened to the angle members-1l in inclined groves in the four cam members 21 mounted on the bars 10 of the seat. understructure. p V

When the seat back 1, 2'isrthrown over, the

link mechanism 15, 16 causes the seat to move transversely, consequent upon which the rods 19 slide up or down in the inclined grooves of the cam members 21, and thus the seat is tilted upwardly at its new front edge, and

downwardly at its rear edge. This movement of the seat isaccomplished in the following manner. As shown in Figures 3 and 4 the seat back is swung to the right and the left hand side of the seat bottom is tilted up so that the right hand rod 19 is at the lower end of the guide 21. The right hand link 15 is fixed on its shaft 8 so that it forms a rock arm to oscillate said shaft. Similarly the arm 16 is fixed on said shaft to rock therewith a-nd, as the links 18 connect this arm and the right hand rod 19, movement/of the seat back to the leftrotates the shaft 8 and thus swings the arm 16 to the right and the links 18 push the rod'19 to which they are connected, upwardly to the right. This tilts the right side of the seat bottom up and'the left side slides down and to the right.

According to a modification the lever 73 may be omitted and the seat back wholly supportedby the central lever a, as illustrated 'by Figure 7, whilst the length of the seat may be such as to provide only a single seating space, in which case the lever 4 would move in a central transverse slot in the seat cushion. l

i The seatback 1,2 of Figures 1 and 2 is removably mounted on the levers 3 and 4, for which purpose the lever I fits into a tube contained in the seat back 1, 2. The upper end of the tube may be closed to form a stop for the end of the'lever 1, and a collar or flange 23 may be provided on the lever 4; upon which the lower bar 7 of the seat back 1, 2 rests. The lever 3 at the end of the seat back is disposed externally of the seat back, and passes through a strap orv eye member 24 adjacent the lower edge of the seat. Its upper end fits into a socket 25 mounted on the end of the seat back at a convenient height. V

In thecase of the modification illustrated by Figure 7, the levere, instead of fitting into a tube in the seat back 1, 2, passes through the lower cross member 26 of the seat back frame and engages in a socket 27 carried by an intermediate cross bar 28 of the seat back frame. Also, instead of providing the stop collaror flange 23, a cross pin 29 is provided through the lever 4: to serve as a stop member.

' Although not essential, the seat back lever 4 preferably moves, where it passes through the seat cushions and frame, between parallel sheet metal guard plates 51 fixed to the seat understructure and constituting a guide box or slot. A similar provision may be made at the inner end'ofthe seat for the lever 3.

It should be understood that although suitable mechanism has been hereinbefore described for moving the seat by movement of the seat back, any other suitable mechanism maybe employed without departing from the invention. 7

The inventlon 18 not limited to the construction of double seats only, as it may be applied to seats designed to accommodate more than two persons. Any number of seat back throw-over levers and associated mechanisms maybe provided, provided that no lever mechanism is provided at the outer end of the seat, andthe end seating space has an overhung back. In the case of seats having three or more seating spaces,.the backs of both end seating sections may be overhung;

and a seat back carried only by lever arms disposed at intervals along the medial portion of the seat between the seating spaces.

What we claim is 1. A reversible double car seat including a main frame supported at the car wall and in spaced relation thereto, afpair of spaced inner and outer seat bottoms supportedon said frame, the inner of said seat bottoms having a side adJacent but spaced from the" car. wall, a seat back frame support between the 'wall and adjacent seat bottom, a second seat back frame support between said seat bottom, said supportsrbeing mounted for swinging movement transversely of the seat on said main frame; and. a seat back frame ios supported on said supports and having a portion overhanging the full widthof the outer seatbottom and free from connection with the outer seat bottom and main frame.

- 2. Areversible double car seat including a main frame supported at the car wall .and in spaced relation thereto, a pair of spaced inner and outer seat bottoms tiltably supported on said frame, the inner of said seat the outer seat bottom and main frame, and a linkage connecting the back frame supports and seat bottoms to tilt the latter upon swinging of the back frame. I

3. A reversible double car seat including, a

main frame supported with one end adj acent a car wall, a pairof upwardly divergent guide cams at each end of the main frame, rods each engaging corresponding 1 cam guides'of said pairs, a, pair ofseat bottoms fixed on said rods, said seat bottoms comprising an inner seat bottom adjacent but spaced from said wall and, outer seat bottom spaced fromithe inner seat bottom, a seat back frame support between the wall 'and adjacent seat bottom, a second seat back frame support between said seat bottom, said supports being mounted for swinging movement transverse- 1y of the seat on said main frame, and a seat back fram'e'supportedon said supports and having a portion overhanging the full width of the outer seatlbottom and free from connection with the outer seat bottomand main frame. a

the inner seat bottom, a seat back frame support between the wall and adjacent seat bottom,

tween said seat bottom, said supportsbeing mounted for swinging movement transversely of the seat on saidmain frame, aseat back frame supported'on said supports and having'a portion overhanging'the full width of the outer seat bottom and free from connection with the outer seat bottom and main frame, and a linkage connecting the back frame supports and seat bottoms to tilt the latter uponswinging of the back frame.

5. A reversible double car'seatincluding, a mainframe supported with one endadjacent a car wall, alpair of upwardly divergent guide cams at each end of the main frame, rods each engaging correspondingcam guides of said pairs, a pair of seat bottoms fixed on said rods, said seat bottoms comprising an inner seat bottom adjacent but spaced from said wall and outer seat bottom spaced from the inner seat bottom, a seat back frame support between the wall and adjacent seat bottom, a second seat back frame support be tween the seat bottoms, brackets at the inner end of the main frame and on said main frame between said seat bottoms, parallel shafts having their ends journalled insaid a second-seat back frame support bearms on the last mentioned shaft, and links connecting said'rock arms with one of said seat bottom supporting rods.-

6. A reversible double car seat including, a main frame supported with one end adjacent a car Wall, a pair of upwardly divergent guide cams at each end of the main frame,

rods; each engaging corresponding cam guides of said pairs,

a pair of seat bottoms fixed on said rods, said seat bottoms comprising an inner seat bottom adjacent but spaced from said wall and outer seat bottom s aced from the inner seat'bottom, a seat back rame support bet-ween tween the seat bottoms, brackets at the inner end of the main frame and on said main frame. between said seat bottoms, parallel the wall and adjacent seat bottom, a second seat back frame support be-,

shafts. having their ends journalled in said 7 p brackets, pairs of spaced links connecting the seat back frame supports with said shafts, the links on one shaftbeing fixed thereto, rock arms on the last mentioned shaft, links In testimony whereof we have signed our.

names to this specification.

1 JAMES WILLIAM CROSS.

ERIC ELDRIDGE JOHNSON.

seat back frame supports with said shafts, the

- links'on one shaft being fixed thereto, rock connecting said rock arms with one of said. 

